Process of making monolithic pavements



VNV? @fr A. 1. PARmsH. PROCESS 0F MAKING MONOLITHIC PAVEMENTS. APPLICATION FILED AUG-1,1917.

`] ,347,654 Patented July 27, 1920.

UNITED Isia'rlals 'PATi-:NT o1=F1eEQI ALAN JAY .FARB/ISH, 0F PARIS, ILLIN0IS- PROCESS OF MAKING MONOLITHIC PAVEMENTS. v

To ZZ Iw/iom it may concern.'

Be it known that I, ALAN JAY PARRISH, a 'citizen of ,the United States, and a resident OfParis, in lthe county yof Edgar and State of Illinois, have invented an Improvement in Processes of Making Monolithic `Pavements, of whichfthe following is a specification.

My invention relates to improvements in processes for makingV monolithic pavements, and it consists in the steps hereinafter described and claimed.

ln the construction of brick pavements, especially those which are designed for making roadways, the practice heretofore has been to provide a base having a cushion of sand and to embed the bricks in the sand, either filling the spaces between the bricks with sand or grouting the bricks with a cement filler. Pavements built in this way are liable to rapid disintegration for the reason that it is impossible to keep the water from entering between the bricks.

This may wash away portions of thesandand cause the bricks to settle, thus rendering the roadway rough and uneven. The frost may also cause the buckling of the roadway. Furthermore, bricks or blocks laid in a cushion of sand have some of the sand forced up from the bottom between the bricks. This prevents the filling of the space between the bricks with cement clear to the bottom and makes onlya bond from the surface of the brick down a portion of its depth. When traflic comes on the brick the bond will break, since it is not embedded or bonded at the bottom.

The purpose of the present invention is to provide a monolithic construction in which a base of concrete is provided, the bricks being set in the plastic concrete and pressed and then the spaces between the bricks filled with cement filler, so that when the cement and concrete harden the whole forms a rigid monolithic structure which is not liable to disintegrate as in the case of the construction with the sand cushions.

A further object of my invention is to provide a construction which may be made rapidly and which does not require the hardening of the base before laying the bricks.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accomfirm anchorage for the bricks.

specification of Lettersratent. Patented July 27,1920. Application filed August 1, v1917. Serial No. 183,907. *A

panying drawing which is a Aperspective Vview of a portion of a monolithic pavement constructed according to my invention.

i In carrying out my invention 1 make use offOrms, such as that shown Iat :l in the drawing, which are placed at `the sides y0f :the

roadway. A layerof .concrete 2 isfirst deposited on the roadway. The consistency of this concrete is such that when a portionv of it is squeezed between the hands it will retain its shape. This layer is deposited to a desired depth and then is struck off by means of a templet or strike plate in a shape to conform to the curvature of the roadway.

A thin film 3 of a mixture of sand and cement is now placed over the concrete base while the latter is in its plastic condition. The water from the plastic concrete base will be drawn up. by capillary attraction into the mixture of sand and cement so as to wet it. The bricks l arel now laid directly on the layer of sand and cement, which layer tends to form a cement mortar. The

ricks are now rolled with a roller so as to bring them to a smooth surface. Immediately after the bricks have been rolled they are grouted with a cement filler, which enters the spaces between the bricks and which firmly binds them together when the cement has set. In the construction of brick pavements it has heretofore been customary to wait until the base has set before proceeding further with the construction. I have found that a plastic concrete base having a thin coating of the cement mortar made by mixing dry cement and sand as described may be immediately utilized as a base by placing the bricks thereon while the base and its thin coating of mortar are in a plastic condition. Furthermore the bricks may be immediately walked on, as for the purpose than a detriment, because of the fact that it forces the mortar upv between the lower parts of adjacent bricks, thereby forming a The construction defined above provides an ideal pavement. Ordinarily vitriiied bricks are used and after considerable use it will be found that the bricks are well bound together. In fact, where any breakage takes place, it will be found that the break will be through the brick itself,

rather than along the edges of the brick Where one would naturally suppose that the break would come. VIn other Words vthe construction is virtually monolithic.v

I claim:

1. The herein described process of making monolithic pavements which consists in depositing a layer of lplastic concrete, striking off the concrete to a desired shape, adding a thin coating of sand and cement mixed dry to the concrete While the latter is in its plastic condition; placing the bricks on thecoating While the latter and vthe concrete are in a plastic condition, and filling the space between the bricks `or blocks with a cementitions binding material.

2. The herein described process of making Ymonolithic pavements which consists in depositing a layer of plastic concrete, striking off the concrete to a desired shape, adding a thin coating of sand and cement mixed dry to the concrete While the' latter is in its plastic condition, placing the bricks on the coating While the latter and the concrete are in a plastic condition, pressing the bricks to bring the top of the latter to a smooth surface While the concrete and said coating are in Va plastic condition, and grou'ting the bricks with a cement filler capable of hardening and firmly binding the bricks togethen Y ALAN J AY PARK-ISH. 

